Description of bitumen emulsion

This invention relates to bitumen;emulsions and a process for preparing them.Bitumen emulsions are well known materials useful in road-making and for other purposes. Their attractions are ease of handling, because of their lower viscosities than the starting bitumen, and their ability to be applied at lower temperatures in spraying etc techniques. There are no environmental problems because in use when the emulsion breaks and the water present evaporates to leave a film of bitumen where required.

There are two main methods currently used in the preparation of bitumen emulsions.

The first employs a colloid mill and the second a centrifugal pump.

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